Guest
Guest
G
Hi!
I need some tips to make a program to control a labelling machine for bottles, with 3 labelliing units I will use a S7 222 PLC.
Description of it:
A flow of bottles is entering in the machine and a foto sensor (I0.0)is registering every single bottle. An other sensor (I0.1) is generating a clock signal sicronized with the "conveyor" and the displacement system of the bottles. I think this can work like this (or not).When a bottle arrive on I0.0 a counter (C1) is incremented and an other counter (C2) is counting the pulses in I0.1.When PV of C2=SP1 the labelling unit places the fist label(Q0.0). When the PV of C2=SP2 the labelling unit places the second label (Q0.1), and the same for de 3rd label (Q0.2).C1 is decremented after n bottles have passed.When an error of the labelling machine is detected in I0.2, I0.3 and I0.4 corresponding to label units 1,2 and 3 the system must memorize the posicion to put that bottle out of the line in an system on the extit of the macine wtih a neumatic cilinder (Q0.3).Here I think I can use a FIFO intruction. The speed of the bottles can be adjusted until 4000/h (more then 1/sec.).
Well this is the idea, I hope you can send me good tips to do it.
Thanks
A. Durval
I need some tips to make a program to control a labelling machine for bottles, with 3 labelliing units I will use a S7 222 PLC.
Description of it:
A flow of bottles is entering in the machine and a foto sensor (I0.0)is registering every single bottle. An other sensor (I0.1) is generating a clock signal sicronized with the "conveyor" and the displacement system of the bottles. I think this can work like this (or not).When a bottle arrive on I0.0 a counter (C1) is incremented and an other counter (C2) is counting the pulses in I0.1.When PV of C2=SP1 the labelling unit places the fist label(Q0.0). When the PV of C2=SP2 the labelling unit places the second label (Q0.1), and the same for de 3rd label (Q0.2).C1 is decremented after n bottles have passed.When an error of the labelling machine is detected in I0.2, I0.3 and I0.4 corresponding to label units 1,2 and 3 the system must memorize the posicion to put that bottle out of the line in an system on the extit of the macine wtih a neumatic cilinder (Q0.3).Here I think I can use a FIFO intruction. The speed of the bottles can be adjusted until 4000/h (more then 1/sec.).
Well this is the idea, I hope you can send me good tips to do it.
Thanks
A. Durval